Grinding-mill.



Patented July 8, I902.

H. G. JOHNSON.

GRINDING MILL.

(App1icz |.tion filed Nov. 1, 1901.)

3 Sheets8heet I.

(No Model.)

No. 704,]95. Patented July 8, 1902,

H. G. JOHNSON.

GRINDING MILL (Application filed. Nov. 1, 1901.)

(No Model.) 3 Sheets-Sheet 2.

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Nu. 704,l95. Patented July 8, i902.

H. G. JOHNSON.

GRINDING MILL.

(Application filed Nov 1, 1901.) (No Model.) 3 SheetsSheet s.

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UNITED STATES PATENT OFFICE.

HANS G. JOHNSON, OF VVAUKON, IOWA, ASSIGNOR OF ONE-HALF TO THEODORESCI-IULTE, OF WAUKON, IOWA.

GRINDING-MILL.

SPECIFICATION forming part of Letters Patent No. 704,195, dated'July 8,1902.

Application filed November 1, 1901. Serial No. 80,785. (No model.)

T0 (0% whom, it nuty concern:

Beit known that I, HANS G. J OHNSON, a citizen of the United States,residing at IVaukon, in the county of Allamakee and State of Iowa, haveinvented certain new and useful Improvements in Grinding-Mills and I dohereby declare the following to be afull, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to grinding-machines, and more particularly to amill which is especially designed and adapted to be driven by a windmillor similar source of power.

The object of my invention is to provide a mill of very simple, cheap,and efficient construction which will enable the farmer and others togrind any variety of grain and fit it for use as food, though myimproved mill may be said to be especially designed for coarselygrinding or breaking the grains of corn and fitting it as more desirablestock food.

-With the foregoing and other objects in view I have provided certaincombination and construction of parts, as will be hereinafter fullydescribed and claimed, reference being had to the accompanying drawings,in which Figure 1 is a perspective view of my invention complete readyfor use, showing the manner of connecting the same to the power affordedby a windmill. Fig. 2 is a side elevation of my improved mill. Fig. 3 isa side elevation thereof, taken from the opposite side from that shownin'Fig. 2. Fig. 4 is a detail in perspective of the preferred form ofpawls 0r detents employed by me to cooperate with the driving-lever.Fig. 5 is a perspective detail view, on a slightly-enlarged scale, of aportion of my improved mill, showing the manner of regulating the actionof the mill, whereby the grain will be ground finely or coarsely, asdesired.

Referring to the numerals upon the drawings, which are employed todesignate the various features of my invention and cooperatingaccessories, 1 indicates a suitable form of post which is disposed in anupright manner, as by connecting the same to the base-section 2, thoughsaid post, if desired,

may be entered directly into the surface of the ground or may extendthrough the floor of a building, it being understood that my object isto firmly secure said post in order that it will reliably hold thewalking-beam 3 suitably pivoted at its inner portion to the upper end ofthe post and operatively connected in any preferred way to the pump-rodor other source of power. To the opposite end of the walking-beam Ipivot-ally connect the connecting-rods or link-sections 4 and 5, eachextending downward into pivotal engagement with its respective lever. Itwill therefore be observed in the drawings that the rod 5 is connectedwith the lever 7, while the rod 4 is similarly connected to the lever 6,thereby insuring that said levers will both be raised and loweredsimultaneously.

I prefer to form the lever 7 so that it will be of greater length thanthe lever 6 in order to compensate for the fact that the drivingpiston 4is connected to the walking-beam 3 in such a manner that it will not bemoved as far as the lever 5, as will be obvious. The driving-lever 7 isprovided with the detent 8, having an integral counterpoise 9, in orderto insure that said detent will always be disposed in engagement withthe teeth 10 of the grinding wheel or disk 11.

Designed to cooperate with the detent 8 is the auxiliary detent 12, alsoprovided with an integral counterpoise 13 and having an apertured end14, designed to be received by the slot or recess 15 in the lower end ofthe detent 8, said detent 12 being secured in cooperation with thedetent 8 by means of the bolt 16, which extends through a suitableaperture in the driving-lever 7.

Inasmuch as detents 17 and 18 are not the same in length, one or theother will catch a tooth, and thus avoid any lost motion. The same istrue with respect to the opposite set of detents. The lever 6 isprovided with the downwardly-directed detent 17 and with the cooperatingauxiliary detent 18, pivotally connected to said lever 6 by the bolt 19in a similar manner to the arrangement just described for the detents 8and 12. It may be stated at this time that the grinding-wheel 11 isrotatably mounted upon the upper end of the standard 20, which latter isfirmly secured in position in any preferred way, as upon the post orother similar support 21. The standard 20 is bifurcated at its upperend, so as to provide a seat for the grindingwheel, and in order tomount the driving-levers 6 and 7 in a reliably efficient manner I preferto bifurcate the inner ends thereof, as indicated in Fig. 1, and disposeone branch upon either side of the bifurcated standard and secure thesame pivotally to the protruding ends of the journals or axle 22,carried by the grinding-wheel. By thus bifurcating the inner ends of thelevers 6 and 7 I am enabled to conveniently and reliably dispose thedetents carried by said levers in such position that they willoperatively engage the peripheral face of the grinding-wheel carryingthe plurality of notches or teeth 10.

I prefer to form the teeth 10 so that they will be substantially in theform of cogs in order that said cogs may mesh with the cogwheel 23,operatively mounted upon the shaft 24, which latter is operativelyseated in the bracket 25, attached to a contiguous part of the standard20. It is obvious that the shaft 24 may be extended outward upon eitherside and have attached thereto any desired form of pulley-wheel or otherdevice by 'which power may be communicated to other machinery, or ifrotary power can be obtained the mill can be driven from the pinion andthe levers not used. Therefore it is obvious that the mill can beoperated by any form of power.

Mounted upon the upper end of the standard 21 and secured thereto in anypreferred way or formed integral therewith are a pair of standards 26,one of said standards being disposed upon either side of thegrindingwheel, while upon the upper end of said standards thus orotherwise disposed I mount the hopper 27, in which may be disposed thecorn or other grain to be ground. It may also be stated at this timethat the auxiliary hopper 28 is provided upon each side of thegrinding-wheel, said hopper being formed integral with or comprising anextension or an enlargement of a portion of the bifurcated end of thestandard 20, said auxiliary hoppers 28 being designed to receive thelower end of the conveyer-tubes 29, extending from the hopper andconveying the grain downward into engagement with the grinding-wheel.

By reference to Fig. 5 it will be observed that means are providedwhereby the grain may be coarsely or finely ground, said'meanscomprising the adjustable plate 30, properly seated in a suitable recessin the auxiliary hopper 28 and rendered adjustable by thecontrolling-Wheel 31, provided with a threaded shaft 32, which extendsthrough a suitable aperture in the wall of the auxiliary hopper andadapted at its inner end to bear against the outer face of the plate 30and hold the same tightly or loosely in engagement with the face of thegrinding-wheel, as may be desired. It will be understood that the innerface or that portion of the plate 30 contiguous to the grinding-wheel isproperly roughened or corrugated in order to complement the cooperatinggrinding-face of the wheel 11.

When it is desired to coarsely grind the grain, the wheel 31 is turnedto the left, thus removing the pressure of the end of the threaded shaft32 against the contiguous part of the plate 30, as will be readilyunderstood.

In Fig. 5 I have illustrated the position of both these plates, it beingunderstood that various modifications and substitutes in constructionmay be adopted, as desired, in order to fit the machine for theperformance of all varieties of work.

By reference to Figs. 1 and 3 it will be observed that the arrangementof the parts is made with a view to accommodating the peculiar movementof the shaft of the windmill-that is to say, provision is made forthrowing the detents 17 and 18 entirely out of engagement with the teethupon the wheel 11 by inserting a rod through the aperture 33, which rodwill prevent the inward movement of the ends of the detents l7 and 18,and thereby throw all of the work upon the lever 7 and the detents 8 and12. When, however, the operation of pumping has been completed and it isdesired to apply the power of the wind-motor solely to the work ofdriving my mill, I will withdraw the pin from the aperture 32, andthereby release the detents 17 and 18 and permit both levers 6 and 7 tooperate in the performance of their office, and the result will be thatthe wheel 11 will be continuously moved either by the up or the downstroke of said lever.

In order that the contents of the hopper 27 may be thoroughly agitated,and thereby prevent clogging of the grain and its consequent failure topass downward through the tubes or chutes 29, I provide the agitatingshafts or rods 34, which may consist of a single piece of wire bent uponitself and extended through or under the metal strap 35, carried by oneof the connecting-rods 4 or 5.

I preferably secure the guiding bracket or strap 35 to theconnecting-rod 5 in view of the inclination of the chutes 29. The lowerends of the rods 34 are preferably slightly corrugated, as indicated bythe dotted lines in Fig. 2, in order to insure a more perfect agitationof the contents of the chutes.

It is obvious that the rods 34 could not be merely pivotally connectedto the connectingrod 5, and for such reason I provide the strap orbracket 35 in order to compensate for the change of position of saidlever. In the present instance I have shown but one of the standards orbrackets 26, though, as above set forth, two of said standards may beprovided, if desired, one upon either side of the grinding-wheel 11.

As above set forth, both sides of the wheel 11 may be properly milled orroughened in order to secure a proper result, it being understood thatsaid wheel is preferably formed of hardened steel, though other materialmay be used.

The wheel 23 is preferably so made that its face will be much wider thanthe face of the wheel 11, thus enabling the said wheel 23 to belaterally adjusted in order to compensate for undue wear caused by thewheel 11 in case said wheel 11 is made of harder material than thatemployed for the wheel 23.

I desire to comprehend in this application all substantial equivalentsand substitutes that may be considered to fall fairly within the scopeof my invention, inasmuch as various changes and modifications maybeadopted without departing from the spirit of my invention.

My mill may be very cheaply made and supplied to farmers and othersdesiring to utilize the cheap motive power of a windmill or theequivalents, inasmuch as my mill can be operated, as above explained,solely upon the downward stroke of the pump-rod without encumbering thepumping operation with the work of driving the mill upon the upwardstroke of said rod or from the pinion 23 by belt, chain, rope, ortumbling-rod.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

In a mill of the character specified, a suitable grinding disk or wheelhaving a milled surface upon both sides and a toothed periphery;suitable means to rotatably mount said wheel; a pair of levers 6 and 7carrying a detent designed to engage the periphery of saidgrinding-wheel; connecting-rods opera atively connected to the lower endof said levers and a Walking-beam pivotally connected to the upper endthereof; a hopper and grainagitating devices carried by the hopper andconnected to one of said rods whereby the contents of the hopper will beagitated and prevented from clogging, and means intermediate the hopperand the grinding-wheel to deliver the grain to the latter, allsubstantially as specified and for the purpose set forth;

In testimony whereof I affix my signature in presence of two witnesses.

HANS G. JOHNSONA Witnesses: v

CHAS. E. STILVVELL, O. S. STILWELL;

